Session cache interface redesign, Part 9:

Switch mod_ssl to use the ap_socache interface.

* modules/ssl/ssl_scache_shmcb.c, modules/ssl/ssl_scache_memcache.c,
  modules/ssl/ssl_scache_dc.c, modules/ssl/ssl_scache_dbm.c: Remove
  files.

* modules/ssl/mod_ssl.c (modssl_register_scache): Remove function.

* modules/ssl/ssl_private.h: Remove modssl_sesscache_provider etc.
  (SSLModConfigRec): Switch to using socache types.

* modules/ssl/ssl_engine_config.c (ssl_cmd_SSLSessionCache): Switch to
  use socache provider.

* modules/ssl/ssl_engine_mutex.c, modules/ssl/ssl_scache.c: Switch to
  using socache constants.

* modules/ssl/config.m4: Drop distache/memcache configuration, remove
  old objects.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@645940 13f79535-47bb-0310-9956-ffa450edef68